A method of identifying a combination of antibodies with a combined improved anti tumor activity is provided. The method comprising identifying at least two anti RTK antibodies capable of inducing synergistic endocytosis of the RTK in a cell expressing the RTK, thereby identifying the combination of antibodies with the combined improved anti-tumor activity.

 
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> Use of visible light at wavelengths of 500 to 550 nm to reduce the number of pathogens in blood and blood components

> Process for preparing porous collagen matrix from connective tissue
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